Typewriting-machine



Patented Aug. 2, 1921..

2 SHEETS-SHEET l.

I. B. HOLDEN.

TYPEWRITING MACHINE.

APPLICATION HLED FEB.24. 1921.

NVENTR Mob/L H15 ATTUHNEY WITNEEEEE J. B. HOLDEN. TYFEWIITING MACHINE.yAPPLICATION FILED FEB.24. 1921.

Patented Aug. 2, 1921.

2 SHEETS`SHEET 2- INVENTUR I 5M @TTUHNEY -WWNEEEE UNITED STATES PATENTOFFICE.

JOSEPH B. HOLDEN, OF SYRACUSE, NEW YORK, ASSIG-NOR TO REMINGTON TYPE- vWRITER COMPANY, OF ILION, NEW YORK, A CORPORATION 0F NEW YORK.

To all whom it may concern:

Be it known that I, JOSEPH B. HOLDEN, citizen of the United States, andresident of Syracuse, in the county of Onondaga and State of New York,have invented certain new and useful Improvements inTypewriting-Machines, of which the following 1s a specification.

My invention relates to typewriting machines and more particularly tothe carriage construction" and means for mounting and supporting thesame.

r1he invention is shown embodied in a `Remington portable machine of thegeneral character disclosed in part in the patent to A. W. Smith,#1,842,513, dated June 8, 1920, and in the application off J. B. Holden,Sr., #851,197, filed January 3, 1920.

The main object ofthe present invention, generally stated, is to providesimple and eective means of the character specified which kcontributesmaterially to the production of a small, light, compact portablemachine, and yet provides suiicient strength( and rigidity to preventdistortion of the parts and assure a proper correlation thereof and aproper operation of themachine underV varying conditions.

From certain -aspects the present invention may be regarded in thenature of an improvement on the construction shown in the abovementioned Holden application.

To the above and other ends which will hereinafter appear my inventionconsists in the features of construction, arrangements of parts andcombinations of devices set forth in the following description andparticularly pointed out in the appended claims.

ln the accompanying drawings, wherein like reference characters indicatecorresponding parts in the different Views,

Figure 1 is a fragmentary vertical foreand-aft sectional View of themachine; showing enough of the machine to illustrate my invention in itsembodiment therein.

Fig. 2 is a detail fragmentary horizontal sectional view of a portion ofthe same, taken on the line2-2 of Fig. 1 and looking in the direction ofthe arrow at said line.

Fig. 3 is a detail fragmentary perspectiv-e view showing a portion ofthe carriage and its support and some of the associated parts. Fig. 4.is a detail fragmentaryv perspective View of the stop means forpreventing the carriage from being lifted off its support, together withsome of the parts associated therewith.

The machine comprises an outer sheetmetal inclosing frame l, in which isfixed a second sheet metal frame that supports the various working partsofthe machine, and which may be removed bodily with all of said workingparts from the inclosing frame. rlhe inner supporting frame comprisessheet metal side plates 2 united by a front comb plate 3, a hollow crossrod 4 and other parts not shown.

Supported by the inner frame is a case shift or carriage supportingframe which may be said to comprise two sections, one in the nature of asheet metal frame and the other comprising a casting 7 d-etachablysecured to the sheet metal frame. This last mentioned frame comprisestwo parallel side bars 5 arranged parallel with and close to the sideplates 2. The bars 5 extend longitudinally fore-andaft of the machineand each is provided with an inwardly bent integral horizontallydisposed supporting flange or portion 6 on which one end of the casting-7, comprising the main body portion of the carriage support proper, isdetachably mounted by screws 8. The forward ends of the bars 5 arepivoted at 9 to the lower ends of parallelupright arms or links 10.These links are pivotally supported on inwardly projecting pins or sindles 11 secured to the side plates 2. otter pins 12 extend throughopenings 13 in the spindles 11, and when removed enable the links to bedetached from said spindles.

The casting 7 is preferably made of alu, minum, and the screws 8preferably engage in threaded openings in nuts 14 of a harder metalreceived in countersunk openings in the body of the casting, to moreeffectively connect the casting to the sheet metal section of the shiftframe. The casting7 is formed with a pair of depending ears 15 near eachend thereof. The upper end of an upright arm 16 is received in the spacebetween each pair of ears 15- to pivotally connect the casting theretoby a removable screw pivot 17. The pair of parallel upright arms 16 arexedly connected at their lower ends to a rock shaft 18. The reduced ends19 of this shaft are received in bearing openings in the sideSpecification of Letters Patent.V Patented Aug. 2, 1921. Applicationfiled February 24, 1921. Serial No. 447,533.

plates 2"of the sup-porting fram-e, and tnus the two-part shift frame issupported at its rear end for a rearward case shift movement from thenormal lower case position shown in Fig. 1, to the upper case position.From an inspection of Fig. 1 is will be understood that the constructionand arrangement of the parts are such that the upright arms 16 and theshaft 18 are disposed beneath the carriage, and that when the carriageis shifted to the upper case position the -arm 16 will be substantiallydead-centered with reference to the printing line and the axis of theplaten, so that blows of the type against the top of the platen will bedirected lengthwise of the supporting arms 16 and resisted by theirfixed pivots, or rock shaft 18, thus reducing or preventing anyvibration of the platen that might ordinarly be produced by the blows ofthe types thereon.

The casting 7 is formed at intervals throughout the length thereof, andalong its front edge portion, with integral upstanding lugs or arms 20.An upstanding sheet metal plate 21 is secured to the front face of theselugs by screws 22, which ass through ope'nings in the plate 21 and 1nthe lugs 20, and are threaded into relatively hard metal nuts 23, inorder to firmly secure the plate 21 to the casting. The upper edgeportion of the plate 21 is bent throughoutthe length there- -of to forma roller bearing way 24 having coact with crossed bearing rollers 27 and28 respectively. Depending lugs 29 are formed on the casting, and to thelower faces of these lugs is secured a sheet metal plate 30, held to thelugs by screws 31 which pass through openings in the plate 3() and inthe casting, and are threaded into relatively hard metal nuts 32received in countersunk openings in the casting. rlfhe plate extendsrearwardly from the casting, and Iis bent along its free edge portion toform a roller bearing way 33 having bearing faces 34 and 35 atsubstantially right-angles to each other for coperation with crossedbearing rollers 36 and 37 respectively.

A The carriage comprises a sheet metal bed or main body portion 38 bentto form a horizontally disposed base portion and an upstanding portion39 which extends up in front of a platen 40 supported by sheet metal endplates 41 secured to the base portion of the carriage. The uppervfreeedge portion of the upstanding part 39 of the carriage bed is bent toform an invertedsub`- stantially U-shaped roller bearing way 42 havingtwo bearing faces 43 and 44 at substantially right-angles to each other,to coact with the bearing rollers 27 and 28 respectively. lt will beseen that the carriage plate 38, bent as shown and described to form theway 42, is adapted to inclose the bearings and bearing rollers at thefront of the carriage, and cover the same and constitute a protectivehousing therefor against the entrance of falling particles of dust orgrit.

The forward edge portion .of the plate 38 extends in front of andoverlaps the bearing plate 21, and is provided with teeth 45 formedtherein t0 constitute a rack which extends throughout the length of thecarriage. lln the present instance this rack constitutes a back spacingrack for coperation with suitable back spacing devices such, for exampleas those disclosed in the application of fferbert E. Bridgwater, filed Jan. 8, 1921, Sr. No. 435,974. ln the present instance this rack isentirely separate and distinct from the feed rack of the carriage, aswill hereinafter more clearly appear. The rear edge portion of thecarriage plate 38 is bent throughout the length thereofto form a bearingroller way 46 having two bearing faces 47 and 48 at substantiallyright-angles to each other and adapted to coact with the crossed bearingrollers 36 and 37 respectively. lt will be seen that the way 46 is ofinverted substantially U-shaped formation in cross section to cover andinclose the roller bearing at the rear of the carriage and exclude dustand grit therefrom.

lfn order to prevent the carriage from beingl lifted off its support, Ihave provided means, shown more particularly in lFigs. 1 and 4, whichcomprise a sheet metal strip 49 with feet or ears 50 and with stops orfingers 51 projecting therefrom. Each ear 50 is tapped to receive theend of a screw 52 which passes through a fore-and-aft slot 53 in thebase of the plate 38. By these means the stops 51 are adjustably securedto the bottom of the plate 38, and extend therefrom with their contactfaces parallel with and 'beneath the way 33 of the plate 30 secured tothe carriage support. The stops 51 are normally free from contact withthe bottom of the way 33 but limit the upward movement of the carriagerelatively thereto, and prevent the carriage from being lifted ed itssupport.

From the foregoing description it will be understood that the sheetmetal bed plate of the carriae has its main body portion substantially-shaped in cross section; that the carriage support is likewisesubstantially f -shaped inN cross section, that the various lateralbends in the bed plate 38, and which extend throughout the lengththereof, tend to stiffen the carriage structure and enable acomparatively light sheet metal stock to be used for the carriage bedand main body portion of the carriage; that the'aluminum casting for thecarriage support gives the requisite stiffness and rigidity to theconstruction without adding to the weight thereof; that each of theplates 21 and-30 is provided with double bends therein which extendthroughout its length, providing a construction which is substantiallyZ-shaped in cross section and further adds to the rigidity of theconstruction, and that the carriage receives a roller bearing supportbeneath the same and beneath the p-laten, and

also receives a roller bearing support at a higher elevation and infront of the carriage and forward of the platen, forming a veryeffective rollervbearing support for the carriage of a top strikemachine in which the invention is shown embodied in the presentinstance.

The carriage support may have a case shifting movement transmittedthereto by any suitable means, those disclosed in the present instancebeing similar to the means disclosed in the hereinbefore mentionedHolden application. Briefly stated, these case shift means comprise acase shift key lever 54C, a link 55, bell crank lever 56, operative on apin 57 carried by a bar 5 of the shift frame, the parts being limited intheir shifting movements by stops 58 and 59, and returned to normalposition by spring 60. Each spring is connected at one end to an ear 61integral with and depending from the associate flange 6, and isconnected at the other end to a pin 62 projecting from a side plate 2.The shift key lever, as in the construction disclosed in said Holdenapplication, controls a locking lever 63 which coacts with the pin 57 toprevent a vibration of the shift frame and platen in the normal positionof the parts. k

1n the present instance 1 have mounted rollers 64 on shouldered pivotscrews threaded into tapped openings in the flanges 6, so that therollers are supported beneath said flanges and coact with the sideplates 2 of the supporting frame and prevent any lateral vibration ofthe carriage su porting shift frame in any position to which the lcarriage may be shifted, and during the shifting movement thereof. Acase shift lock key 65 and locking member 66 are-also provided, as inthe construction disclosed in said Holden application, to lock the shiftkey lever 54 down when its key 67 is depressed.

'1`he feed of the carriage under the pull of its spring drum (not shown)is controlled by suitable feed dogs (not shown), which coact with a feedrack 68 secured by screws 69 to a plate 70, pivoted at 71 to bracketplates 72, secured to the base plate of the carriage.

1t ywill be seen that so far as the parts shown and described areconcerned a removal of the screws 8 and 17 enable the carriagesupporting member 7, together with the carriage mounted thereon, to bedetached and removed from the machine as a single unit and that saidparts, as a single unit,

may as readily be replaced in the machine when desired.

All of the nuts, 14, 23 and 32 may have their peripheries scored,'corrugated or milled as shown at 23a in Fig. 3, so as to engage thewalls of the countersunk openings in which the nuts are received andthus lock each nut against turning when the associated screw is threadedinto or out of the nut.

The employment of the rock shaft 18 beneath the carriage and with itsrigidly connected arms 16 directly and firmly pivoted to the rigidcasting 7 provides a firm construction that prevents the carriagesupport from being deflected, distorted or skewed and helps to maintainthe parts properly correlated and to assure a proper positioning of thecarriage in its line of travel at all times.

What 1 claim as new and desire to secure by Letters Patent is y 1. 1n atypewriting machine, the combination of a carriage comprising a sheetmetal bed plate which has its main body portion substantially lis-shapedin cross section and has its edge portions bent to form two coveredbearing roller receiving ways each presenting two track faces-one atsubstantially right angles to the other, a carriage supportsubstantially L-shaped in cross section and having acast metal bodyportion and roller receiving ways disposed opposite to the ways in .thecarriage bed, both ways on the carriage support being formed by bends insheet metal plates detachably secured to the cast metal body portion,and bearing rollers in said ways.

2. 1n a typewriting machine, the combination of a carriage comprising asheet metal bed plate ,which has its main body portion substantiallyL-shaped in cross section and has its edge portions bent intosubstantially inverted U-shaped form to provide two covered bearingroller receiving ways, a substantially L-shaped carriage supportcomprising a cast metal body portion, two sheet metal plates bent intosubstantially Z-shaped form in cross section to provide two bearingroller ways disposed opposite to the ways on the carriage, means fordetachably xing said plates to the cast metal body portion, and bearingrollers received in said ways. l

8. ln a typewriting machinefthe combination of a carriage comprising a`sheet metal bed plate 4which has its main body portion substantiallyL-shaped in cross secvide two bearing roller ways disposed opposite tothe ways on the carriage, means for detachably fixing said plates to thecast metal body portion, bearing rollers received in said ways, and arack Jformed in the edge of one of said Ushaped ways.

4;. In a typewriting machine, the combination of a carriage comprising asheet metal bed plate which has its main body portionsubstantially'L-shaped in cross section and has its edge portions bentto form two covered bearing roller receiving ways, a carriage supportsubstantially l..-shaped in cross section and having two bearing rollerreceiving ways disposed opposite those in the carriage bed plate, and arack formed in one edge of the bed plate and extending ytorward of theupright member ot the H -shaped carriage support.

5. In a typewriting machine, the combination of a carriage comprising asheet metal bed plate which has its main rbody portion substantiallylL-shaped in l/cross section and has its edge portions bent intosubstantially inverted til-shaped form to providetwo coveredbearingroller receiving ways, a carriage support substantially l..shapedin cross section and provided with sheet metal roller bearing ways thatare bent substantially 2- shaped in cross section, bearing rollers insaid ways, and a finger or stop fixed on the bed plate of the carriageand extending benre/ath one of said ways on the carriage support`toprevent the carriage from being litted off its support.

6. In a typewriting machine, the combination of a carriage supportcomprising a cast metal body portion with upstanding lugs formedintegral therewith and an upstanding sheet metal plate secured to saidlugs and formed with a roller bearing waytherein, and a second sheetmetal plate secured to said cast metal body portion and formed with witha roller bearing way therein; a platen carriage comprising a sheet beta1bed formed with' roller bearing ways therein; and bearing rollersintermediate the ways in the carriage bed and said support.

7. ln a typewriting machine, the combination of a carriage supportcomprising a cast metal body portion with upstanding lugs formedintegral therewith:l and an upstanding sheet metal plate secured to saidlugs and formed with a roller bearing way therein, and a second sheetmetal plate secured to said cast metal body portion and formed with aroller bearing way therein; a platen carriage comprising a sheet metalbed formed with roller bearing ways therein, the carmetal tbody portionhaving integral up standing lugs thereon, an upstanding sheet metalplate bent to provide a roller bearing way therein and secured tosaidlugs, and a i second sheet metal plate bent to provide a roller bearingway and secured to the bottom of said cast metal body portion; acarriage comprising a sheet metal body portion bent to provide rollerbearing ways disposed opposite the ways in the carriage support; andbearing rollers in said ways.

9. ln a typewriting machine, the combination of a carriage supportcomprising a cast metal body portion having integral upstanding lugsthereon, an upstanding sheet metal plate bent to provide a rollerbearing way therein and secured to said lugs, and a second sheet metalplate bent to provide a roller bearing way and secured tothe bottom ofsaid cast metal body portion; a carriage comprising a sheet metal bodyportion bent to provide roller bearing Ways disposed opposite the waysin the carriage support; bearing rollers in said ways; and a platencarried by said carriage and extending below the roller bearing way insaid upstanding plate and over the way insaid second plate.

10. lin a typewriting machine, the combination of a carriage havingroller bearing ways, a carriage support the main body portion of whichis made of aluminum, sheet metal plates having companion roller bearingways for those on the carriage, bearing rollers. between said ways, andmeans for detachably securing said plates to the aluminum body portionof the support, said means comprising nuts ot harder metal received incountersunkopenings in said aluminum Abody portion and held againstrotation therein and screws which pass through openings in said platesand body portion and are threaded into said nuts. l 1

Signed at Syracuse, in the county o @nondaga and State of New York this21 day of Feb., A. D. 1921.

JUSElPll-l B. HLDEN. Witnesses:

A. E. BANDYWATER, N. ll. STAFFORD.

